Description

Tetrasodium 4-(Benzoylamino)-5-Hydroxy-6-[[1-Sulphonato-6-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-1,7-Disulphonate is a high-purity, water-soluble anionic dye belonging to the class of reactive and direct dyes. This compound is engineered to deliver exceptional color strength, wash-fastness, and chemical stability in demanding applications. It is a critical intermediate and functional dye for industries requiring vibrant and durable coloration of natural and synthetic fibers, as well as specialty inks and coatings.

Application

• Textile Dyeing: Primary application as a reactive or direct dye for cotton, wool, silk, and nylon, offering excellent affinity and fastness properties.
• Leather Coloring: Used in the dyeing of leather goods to achieve deep, uniform, and light-resistant colors.
• Paper Industry: Employed in the production of colored papers and paper products where high color value is required.
• Ink Manufacturing: A key component in the formulation of specialty inks for packaging, security printing, and digital textiles.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific affinity.
• Research & Development: Serves as a standard or intermediate in chemical synthesis and dye chemistry research.

Basic Information

Item	Details
Product Name	Tetrasodium 4-(Benzoylamino)-5-Hydroxy-6-[[1-Sulphonato-6-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-1,7-Disulphonate
CAS No.	82199-13-1
Molecular Formula	C39H28N4Na4O19S5
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. Reactive Black 5; Remazol Black B; Tetrasodium 4-(Benzoylamino)-5-hydroxy-6-[[1-sulphonato-6-[(2-sulphatoethyl)sulphonyl]-2-naphthyl]azo]naphthalene-1,7-disulphonate; 4-(Benzoylamino)-5-hydroxy-6-[[1-sulphonato-6-[[2-(sulphonatooxy)ethyl]sulphonyl]-2-naphthyl]azo]naphthalene-1,7-disulphonic acid tetrasodium salt; C.I. 20505; Levafix Black EB
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems. Every batch is analyzed to ensure consistency in color value, purity, and chemical composition. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, impurity profile, and solubility. Quality standards are aligned with industry specifications for textile and specialty chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 85% (Dye Content)
Moisture Content	≤ 8.0%
Water Solubility	Freely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.